Temperature-adjustable waste plastic melting and extruding device

Abstract

The present application belongs to the technical field of waste plastic melting extrusion, in particular to a temperature-adjustable waste plastic melting extrusion device. The traditional waste plastic extrusion equipment has fixed heating points and fixed heating range, which cannot be adjusted when processing waste plastic with mixed components. The present application proposes the following scheme, which includes a support seat, a control device fixedly connected to the top end of the support seat, a machine cylinder arranged above the support seat, one end of the machine cylinder arranged on one side of the control device, a screw arranged in the machine cylinder, and a temperature adjusting assembly arranged in the screw. The temperature-adjustable waste plastic melting extrusion device can change the heating position along the screw inner cavity, flexibly enlarge the low-temperature area heating range, reduce the high-temperature area heating area, accurately match the temperature required for plasticizing each section of plastic, and greatly improve the overall melting uniformity of mixed waste plastic.

Description

Technical Field

[0001] This invention relates to the field of waste plastic melt extrusion technology, and more particularly to a waste plastic melt extrusion device with adjustable temperature. Background Technology

[0002] Waste plastic melting and extrusion equipment is the core equipment for thermoplastic plastic recycling. It is specially designed to heat, melt, extrude, plasticize, filter and extrude crushed and washed waste plastic films, woven bags, plastic bottles, scraps, etc., and then cool and granulate them to produce uniform recycled plastic granules. The produced granules can be reused in injection molding, blown film, extrusion and other processing steps to realize the recycling of plastic resources.

[0003] Traditional waste plastic melting and extrusion equipment generally adopts a heating scheme in which a fixed heating coil is arranged around the outer wall of the barrel. However, the composition of recycled waste plastic raw materials is very mixed, and the temperature conditions required for melting of various materials vary greatly. A single fixed heating coil can only output a uniform heat supply, making it difficult to adapt and adjust to material differences and segmented working conditions. Summary of the Invention

[0004] This invention discloses a temperature-adjustable waste plastic melting and extrusion device, which aims to solve the technical problem in the background art where traditional waste plastic extrusion equipment uses a fixed heating coil on the outer wall of the barrel for heating, and the heating point and heating range remain unchanged throughout the process, making it difficult to harmonize the components of waste plastics.

[0005] This invention proposes a temperature-adjustable waste plastic melt extrusion device, comprising: A support base, with a control device fixedly connected to its top; A barrel is positioned above a support base, with one end of the barrel located on one side of the control device; The screw is located inside the barrel; A temperature regulating component is disposed inside the screw. The temperature regulating component includes an insulating sealing plate. The outer side of the insulating sealing plate is fixedly connected to the inner side of the screw. Two heating devices are disposed inside the screw, with the opposite sides of the heating devices contacting the inner side of the screw. A temperature detection component is provided on the outside of the barrel. The temperature detection component includes an external insulation shell, the inner side of which is fixedly connected to the outside of the barrel. Two temperature measuring devices are provided on the outside of the barrel, and the temperature measuring devices are in contact with the outside of the barrel.

[0006] In a preferred embodiment, the temperature regulating component further includes: The motor frame is fixedly connected to one side of the insulating sealing plate on one side. The servo motor is fixedly connected to the inner side of the motor frame on the outside, and the power output shaft of the servo motor is connected to a rotating shaft through a coupling. A pull rope is pulled, with one end of the rope wrapped around the outside of the rotating shaft. The insulating sealing plate has holes, and the outside of the pull rope is movably connected to the inside of the holes.

[0007] In a preferred embodiment, the temperature regulating component further includes: A spring tube is fixedly connected to the side of the insulating sealing plate away from the motor frame, and the pull rope is located inside the spring tube. A sliding groove plate, the top of which is fixedly connected to the inside of the screw; Multiple movable parts are provided, with their inner sides fixedly connected to the outer side of the spring tube cylinder, and the top ends of the movable parts slidably connected to the bottom end of the sliding groove plate.

[0008] In a preferred embodiment, the temperature regulating component further includes: A linear plate, one end of which is fixedly connected to the side of the isolation sealing plate away from the servo motor, is disposed inside the spring tube. The inner side of the push connecting frame is slidably connected to the outer side of the straight plate. The side of the push connecting frame near the isolation sealing plate is fixedly connected to one end of the pull rope. The push connecting frame is positioned between the two heating devices.

[0009] In a preferred embodiment, the temperature regulating component further includes: The front frame is fixedly connected to the side of the push connecting frame away from the pull rope; The bidirectional compression rod has its outer side fixedly connected to the inner side of the front frame, and both ends of the bidirectional compression rod are fixedly connected to the opposite side of the heating device.

[0010] In a preferred embodiment, the temperature detection component further includes: The movable motor is located on the outside of the outer insulation shell. The power output shaft of the movable motor is connected to a threaded rod via a coupling. The outer insulation shell has a hole on the side near the movable motor. The threaded rod is movably connected inside the hole, and the end of the threaded rod away from the movable motor is movably connected to the inside side of the outer insulation shell. The guide rod has both ends fixedly connected to the inside sides of the outer insulation shell; The bottom ends of the U-shaped frame are movably connected to the outside of the threaded rod and the guide rod.

[0011] In a preferred embodiment, the temperature detection component further includes: Two front rods, one end of each front rod is fixedly connected to the side of the U-shaped frame away from the movable motor; Two fixed frames, with their opposite sides both fixedly connected to the opposite side of the front rod; Multiple support rods, with both ends of each support rod fixedly connected to the inner sides of the fixed frame.

[0012] In a preferred embodiment, the temperature detection component further includes: Multiple auxiliary rollers, the inner sides of which are movably connected to the outer sides of the support rod; Two connectors, with their opposite sides fixedly connected to the outside of the front rod; Two pressing springs, with their opposite ends fixedly connected to opposite sides of the connector, and the opposite sides of the pressing springs fixedly connected to the opposite side of the temperature measuring device.

[0013] In a preferred embodiment, it also includes: The bottom of the feed hopper is fixedly connected to the top of the machine barrel; An extrusion device, one side of which is fixedly connected to the end of the barrel furthest from the control device; The bottom of the feed cover is located at the top of the feed hopper.

[0014] In a preferred embodiment, it also includes: The drive motor is located above the feed cover. The power output shaft of the drive motor is connected to a rotating rod via a coupling. The rotating rod is located inside the feed hopper. Two extension pieces, the inner sides of which are fixedly connected to the outer side of the rotating rod.

[0015] In a preferred embodiment, it also includes: Two stirring blades, both of which are fixedly connected to the end of the extension away from the rotating rod; Multiple bases, the top of which is fixedly connected to the bottom of the barrel, and the bottom of which is fixedly connected to the top of the support base.

[0016] As can be seen from the above, the temperature-adjustable waste plastic melting and extrusion device provided by the present invention has the beneficial effect of being able to change the heating position along the inner cavity of the screw, adjusting the heat supply for the barrel feeding and conveying section, the melting and plasticizing section, and the extrusion and discharge section respectively, flexibly expanding the heating range of the low-temperature area, reducing the heating area of ​​the high-temperature area, accurately matching the temperature required for plastic plasticizing in each section, and greatly improving the overall melting uniformity of mixed waste plastics. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a temperature-adjustable waste plastic melting and extrusion device proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of the barrel of a temperature-adjustable waste plastic melting extrusion device proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the screw in a temperature-adjustable waste plastic melting and extrusion device proposed in this invention. Figure 4 This is a schematic diagram of the internal structure of the feed hopper of a temperature-adjustable waste plastic melting and extrusion device proposed in this invention. Figure 5 This is a schematic diagram of the temperature control component structure of a temperature-adjustable waste plastic melting and extrusion device proposed in this invention. Figure 6 This is a schematic diagram of the temperature control component of a temperature-adjustable waste plastic melting and extrusion device proposed in this invention. Figure 7 This is a schematic diagram of the temperature detection component structure of a temperature-adjustable waste plastic melting and extrusion device proposed in this invention. Figure 8 This is a schematic diagram of the temperature detection component of a temperature-adjustable waste plastic melting and extrusion device proposed in this invention.

[0018] In the diagram: 1. Support base; 2. Control device; 3. Barrel; 4. Feed hopper; 5. Extrusion device; 6. Screw; 7. Drive motor; 8. Base; 9. Feed cover; 10. Temperature detection component; 1001. External insulation shell; 1002. Movable motor; 1003. Threaded rod; 1004. Guide rod; 1005. U-shaped frame; 1006. Front rod; 1007. Fixing frame; 1008. Support rod; 1009. Auxiliary roller; 1010. Connector; 1011. Press spring 1012. Spring; 1013. Temperature measuring device; 14. Rotating rod; 15. Extension piece; 16. Stirring blade; 17. Temperature regulating component; 18. Isolation sealing plate; 19. Motor frame; 10. Servo motor; 10. Rotating shaft; 11. Sliding groove plate; 12. Moving part; 13. Spring tube; 14. Pull rope; 14. Straight plate; 14. Push connecting frame; 15. Front frame; 16. Bidirectional compression rod; 17. Heating device. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] The temperature-adjustable waste plastic melting and extrusion device disclosed in this invention is mainly used in traditional waste plastic extrusion equipment that uses a fixed heating coil on the outer wall of the barrel for heating. The heating point and heating range are fixed throughout the process, making it difficult to harmonize the waste plastics with mixed components.

[0021] Reference Figures 1-8 A temperature-adjustable waste plastic melting and extrusion device 5, comprising: Support base 1, with a control device 2 fixedly connected to the top of support base 1; The barrel 3 is positioned above the support base 1, with one end of the barrel 3 located on one side of the control device 2; Screw 6 is located inside the barrel 3; Temperature regulating component 14 is disposed inside screw 6. Temperature regulating component 14 includes an isolation sealing plate 1401. The outer side of the isolation sealing plate 1401 is fixedly connected to the inner side of screw 6. Two heating devices 1413 are disposed inside screw 6. The opposite side of heating devices 1413 is in contact with the inner side of screw 6. Temperature detection component 10 is disposed on the outside of barrel 3. Temperature detection component 10 includes an external heat insulation shell 1001. The inner side of the external heat insulation shell 1001 is fixedly connected to the outside of barrel 3. Two temperature measuring devices 1012 are disposed on the outside of barrel 3. The temperature measuring devices 1012 are in contact with the outside of barrel 3.

[0022] Reference Figure 3 , Figure 5 and Figure 6 In a preferred embodiment, the temperature regulating component 14 further includes: Motor frame 1402, one side of motor frame 1402 is fixedly connected to one side of isolation sealing plate 1401; Servo motor 1403 is fixedly connected to the inner side of motor frame 1402 on the outside. The power output shaft of servo motor 1403 is connected to rotating shaft 1404 through coupling. Pull rope 1408, one end of which is wrapped around the outside of rotating shaft 1404. Holes are provided on the sealing plate 1401, and the outside of pull rope 1408 is movably connected to the inside of the holes.

[0023] In this invention, the temperature regulating component 14 further includes: The spring tube 1407 is fixedly connected to the side of the isolation sealing plate 1401 away from the motor frame 1402, and the pull rope 1408 is set inside the spring tube 1407. The top end of the sliding groove plate 1405 is fixedly connected to the inner side of the screw 6; Multiple movable parts 1406 are fixedly connected to the outer side of the spring tube 1407 on their inner sides, and the top of each movable part 1406 is slidably connected to the bottom of the sliding groove plate 1405.

[0024] In this invention, the temperature regulating component 14 further includes: Linear plate 1409, one end of which is fixedly connected to the side of the isolation sealing plate 1401 away from the servo motor 1403, and the linear plate 1409 is disposed inside the spring tube 1407. Push the connecting frame 1410. The inner side of the pushing connecting frame 1410 is slidably connected to the outer side of the straight plate 1409. The side of the pushing connecting frame 1410 near the isolation sealing plate 1401 is fixedly connected to one end of the pull rope 1408. The pushing connecting frame 1410 is arranged between the two heating devices 1413. The front frame 1411 is fixedly connected to the side of the push connecting frame 1410 away from the pull rope 1408; The bidirectional compression rod 1412 is fixedly connected to the inner side of the front frame 1411 on its outer side, and both ends of the bidirectional compression rod 1412 are fixedly connected to the opposite side of the heating device 1413.

[0025] Specifically, during the continuous melting operation, the servo motor 1403, mounted on the motor frame 1402 on the side of the isolation sealing plate 1401, is started. The output end of the servo motor 1403 drives the rotating shaft 1404 to rotate continuously. The pull rope 1408, wound around the outer wall of the rotating shaft 1404, rotates with the shaft to switch between winding and unwinding. The pull rope 1408 passes through the reserved channel of the isolation sealing plate 1401 and is arranged inside the spring tube 1407. The forward and backward traction force is generated by the winding and unwinding of the rope, and the moving part 1406 can slide smoothly along the surface of the sliding groove plate 1405. When the traction displacement of 1408 changes, the spring tube 1407 achieves overall expansion and contraction deformation through the sliding cooperation of the movable part 1406 and the sliding groove plate 1405. The straight plate 1409 is transversely inserted inside the spring tube 1407. The push connecting frame 1410 is pulled by the end of the pull rope 1408 and slides back and forth along the rod of the straight plate 1409. The push connecting frame 1410 is located in the middle of the two sets of heating devices 1413. The sliding displacement will be directly transmitted to the front frame 1411 connected on one side. The front frame 1411 synchronously follows the push connecting frame 1410 to move forward and backward. A bidirectional compression rod 1412 is horizontally mounted in the inner cavity of the front frame 1411. The two ends of the bidirectional compression rod 1412 are respectively connected to two sets of heating devices 1413 on the left and right. During the forward and backward movement of the front frame 1411, the bidirectional compression rod 1412 is simultaneously stretched or compressed, thereby driving the heating devices 1413 at both ends to move closer to each other or further away from each other. The two sets of heating devices 1413 are always attached to the inner wall of the screw 6. As the position changes back and forth, they continuously heat the inner wall area of ​​the screw 6 in sections. By flexibly switching the heating position of the heating device 1413, the degree of heating of different sections of the screw 6 is changed, and heat is simultaneously conducted to the molten material flow inside the barrel 3. In specific application scenarios, the heating position can be changed along the inner cavity of the screw 6. The heat supply can be adjusted for the feeding and conveying section, melting and plasticizing section and extrusion and discharge section of the barrel 3 respectively. The heating range of the low temperature area can be flexibly expanded and the heating area of ​​the high temperature area can be reduced. The temperature required for plastic plasticizing in each section can be accurately matched, and the overall melting uniformity of mixed waste plastics can be greatly improved. It should be noted that the heating device 1413 is directly attached to the inner wall of the screw 6, and the heat is quickly conducted to the internal material flow through the screw 6 base. Compared with the traditional external heating method of wrapping the outer wall of the barrel 3 with heating rings, the heat transfer path is shorter and there is no heat loss due to multiple layers of shell insulation.

[0026] Reference Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 In a preferred embodiment, the temperature detection component 10 further includes: A movable motor 1002 is located on the outside of the outer insulation shell 1001. The power output shaft of the movable motor 1002 is connected to a threaded rod 1003 via a coupling. A hole is provided on the side of the outer insulation shell 1001 near the movable motor 1002. The threaded rod 1003 is movably connected inside the hole, and the end of the threaded rod 1003 away from the movable motor 1002 is movably connected to the inside side of the outer insulation shell 1001. Guide rod 1004, both ends of which are fixedly connected to the inside sides of the outer insulation shell 1001; The bottom ends of the U-shaped frame 1005 are movably connected to the outside of the threaded rod 1003 and the guide rod 1004.

[0027] In this invention, the temperature detection component 10 further includes: Two front rods 1006, one end of each front rod 1006 is fixedly connected to the side of the U-shaped frame 1005 away from the movable motor 1002; Two fixed frames 1007, with their opposite sides fixedly connected to the opposite side of the front rod 1006; Multiple support rods 1008, both ends of which are fixedly connected to the inside sides of the fixed frame 1007.

[0028] In this invention, the temperature detection component 10 further includes: Multiple auxiliary rollers 1009, the inner sides of which are movably connected to the outer side of the support rod 1008; Two connectors 1010, with their opposite sides fixedly connected to the outside of the front rod 1006; Two pressing springs 1011 are fixedly connected at opposite ends to the opposite side of the connector 1010, and the opposite sides of the pressing springs 1011 are fixedly connected to the opposite side of the temperature measuring device 1012.

[0029] Specifically, during the same period of dynamic temperature adjustment operation of the temperature regulating component 14, the temperature detection component 10 of the external insulation shell 1001 covering the outside of the barrel 3 synchronously monitors the temperature throughout the process. The movable motor 1002 installed on the side wall of the external insulation shell 1001 starts to run, and the power output drives the threaded rod 1003 to rotate continuously. The guide rod 1004 is arranged in parallel on one side of the threaded rod 1003. Together, they form a two-way limiting guide support structure for the U-shaped frame 1005. The two ends of the U-shaped frame 1005 are respectively sleeved on the threaded rod 1003 and the guide rod 1004. The rotation of the threaded rod 1003 generates threaded pushing force. Under the constraint of guide rod 1004, U-shaped frame 1005 slides horizontally back and forth along the direction of the rod. Two front rods 1006 are arranged on the side of U-shaped frame 1005 facing extrusion device 5. The ends of front rods 1006 are respectively connected to fixed frame 1007. Multiple support rods 1008 are horizontally mounted in the inner cavity of fixed frame 1007. Several auxiliary rollers 1009 are movably sleeved on the rod body of support rod 1008. Auxiliary rollers 1009 roll and support against the outer wall of outer insulation shell 1001 to reduce the frictional resistance when the whole slides. When front rod 1006 moves synchronously with U-shaped frame 1005, fixed frame 1007, support rods 1008 and auxiliary rollers 1009 slide synchronously together. Connector 1010 is fixedly assembled on the outer side of front rod 1006. The connecting piece 1010 is connected to the pressing spring 1011 on the side facing the barrel 3. The other end of the pressing spring 1011 abuts against the outer wall of the temperature measuring device 1012. The pressing spring 1011 continuously applies a pressing force based on its own elastic deformation ability, so that the temperature measuring device 1012 is always tightly attached to the outer wall surface of the barrel 3. It will not loosen or detach due to slight deformation of the shell or assembly gap. The temperature measuring device 1012 moves back and forth along the barrel 3 with the entire sliding structure to continuously collect real-time temperature data of the outer wall of the barrel 3. It indirectly feeds back the actual heating temperature of the molten plastic in the inner cavity of the barrel 3 based on the thermal conductivity of the barrel wall. It covers a wide range of melting sections along the entire length of the barrel 3, completely collects the temperature distribution of the entire melting channel, and provides real-time feedback on the overall temperature uniformity of the barrel 3. In specific application scenarios, the temperature measuring device 1012 slides and scans along the entire length of the barrel 3 to measure the temperature. Unlike the single-point fixed temperature measurement mode, it can completely collect the barrel wall temperature of all areas of the feeding section, melting section and extrusion discharge section, and fully reflect the temperature distribution of the entire material flow channel inside the barrel 3. There will be no temperature measurement blind spots, and it can accurately capture local high temperature, low temperature and other temperature difference problems.

[0030] It should be noted that the external insulation shell 1001 encloses the cylinder 3, reducing the sudden changes in cylinder wall temperature caused by ambient wind cooling and room temperature fluctuations. The temperature measurement values ​​are closer to the actual temperature of the molten material, and the test data are more reliable.

[0031] Reference Figures 1-4 In a preferred embodiment, it further includes: Feed hopper 4, the bottom end of which is fixedly connected to the top end of the barrel 3; The extrusion device 5 is fixedly connected to one side of the barrel 3 away from the control device 2; Feed cover 9, the bottom end of feed cover 9 is set at the top of feed hopper 4; Drive motor 7 is located above feed cover 9. The power output shaft of drive motor 7 is connected to rotating rod 11 via coupling. Rotating rod 11 is located inside feed hopper 4. Two extension members 12, the inner sides of which are fixedly connected to the outer side of the rotating rod 11; Two stirring blades 13 are fixedly connected to the end of the extension 12 away from the rotating rod 11; Multiple bases 8, the top of which is fixedly connected to the bottom of the barrel 3, and the bottom of which is fixedly connected to the top of the support base 1.

[0032] Working principle: During the waste plastic melting and extrusion processing operation, first open the feed cover 9 and put the recycled waste plastic material into the feed hopper 4. Then, turn on the drive motor 7 mounted above the feed cover 9. The drive motor 7 outputs power to drive the rotating rod 11 connected below to rotate continuously in a circular motion. The extension 12 attached to the rotating rod 11 rotates synchronously. The stirring blade 13 then moves and stirs extensively inside the feed hopper 4. The accumulated waste plastic is broken up by the stirring blade 13. Under the influence of gravity, the agglomerated material is fully disintegrated, and the loose and uniform material slides down and is smoothly conveyed into the cavity of the barrel 3. The control device 2 issues an operating command, which drives the screw 6 installed in the inner cavity of the barrel 3 to rotate at a uniform speed. The heating structure of the barrel 3 itself is activated simultaneously to raise the temperature. The waste plastic falling into the barrel is gradually heated, softened, melted and plasticized under the dual action of the screw 6 pushing and conveying and the external heating of the barrel 3. The molten plastic fluid is conveyed forward along the direction of the screw 6 and finally extruded outward through the extrusion device 5. During the continuous melting operation, the servo motor 1403, mounted on the motor frame 1402 on the side of the isolation sealing plate 1401, is started. The output end of the servo motor 1403 drives the rotating shaft 1404 to rotate continuously. The pull rope 1408, wound around the outer wall of the rotating shaft 1404, rotates with the shaft to switch between winding and unwinding. The pull rope 1408 passes through the reserved channel of the isolation sealing plate 1401 and is arranged inside the spring tube 1407. The front-to-back traction force is generated by the winding and unwinding of the rope. The movable part 1406 can slide smoothly along the surface of the sliding groove plate 1405. When the traction displacement of the pull rope 1408 changes, the spring tube 1407 achieves overall expansion and contraction deformation through the sliding cooperation between the movable part 1406 and the sliding groove plate 1405. The straight plate 1409 is transversely inserted inside the spring tube 1407. The push connecting frame 1410 is pulled by the end of the pull rope 1408 and moves back and forth along the rod of the straight plate 1409. The sliding motion pushes the connecting frame 1410 to the middle position of the two sets of heating devices 1413. The sliding displacement is directly transmitted to the front frame 1411 connected to one side. The front frame 1411 synchronously follows the pushing of the connecting frame 1410 to move forward and backward. The inner cavity of the front frame 1411 is horizontally supported by a bidirectional compression rod 1412. The two ends of the bidirectional compression rod 1412 are respectively connected to the left and right sets of heating devices 1413. During the forward and backward movement of the front frame 1411, the bidirectional compression rod 1412 synchronously undergoes tensile or compressive deformation, thereby driving the heating devices 1413 at both ends to synchronously move towards each other or away from each other. The two sets of heating devices 1413 are always attached to the inner wall of the screw 6. As the position changes back and forth, they continuously heat the inner wall area of ​​the screw 6 in sections. By flexibly switching the heating position of the heating device 1413, the degree of heating of different sections of the screw 6 is changed, and heat is synchronously conducted to the molten material flow inside the barrel 3. During the same period of dynamic temperature adjustment by the temperature regulating component 14, the temperature detection component 10, which is installed on the outer side of the barrel 3 and is equipped with an external insulation shell 1001, simultaneously monitors the temperature throughout the process. The movable motor 1002 installed on the side wall of the external insulation shell 1001 starts to run, and the power output drives the threaded rod 1003 to rotate continuously. The guide rod 1004 is arranged parallel to the threaded rod 1003. Together, they form a two-way limiting and guiding support structure for the U-shaped frame 1005. The two ends of the U-shaped frame 1005 are respectively sleeved on the threaded rod 1003 and the guide rod. The 1004 rod body and the threaded rod 1003 rotate to generate threaded pushing force. Under the limiting constraint of the guide rod 1004, the U-shaped frame 1005 slides horizontally back and forth along the direction of the rod body. Two front rods 1006 are arranged on the side of the U-shaped frame 1005 facing the extrusion device 5. The ends of the front rods 1006 are respectively connected to the fixed frame 1007. Multiple support rods 1008 are horizontally mounted in the inner cavity of the fixed frame 1007. Several auxiliary rollers 1009 are movably sleeved on the rod body of the support rods 1008. The auxiliary rollers 1009 are in contact with the outer insulation shell 100. 1. The outer wall rolling support reduces the frictional resistance during overall sliding. When the front rod 1006 moves synchronously with the U-shaped frame 1005, the fixed frame 1007, support rod 1008, and auxiliary roller 1009 slide synchronously together. The connecting piece 1010 is fixedly assembled on the outer side of the front rod 1006. The side of the connecting piece 1010 facing the barrel 3 is connected to the pressing spring 1011. The other end of the pressing spring 1011 abuts against the outer wall of the temperature measuring device 1012. The pressing spring 1011 continuously applies a pressing force by relying on its own elastic deformation ability. This ensures that the temperature measuring device 1012 always fits tightly against the outer wall surface of the barrel 3, preventing loosening or detachment due to slight deformation of the shell or assembly gaps. The temperature measuring device 1012 moves back and forth along the barrel 3 along the entire sliding structure to continuously collect real-time temperature data of the outer wall of the barrel 3. It indirectly provides feedback on the actual heating temperature of the molten plastic inside the barrel 3 by relying on the thermal conductivity of the barrel wall. It covers a wide range of melting sections along the entire length of the barrel 3, fully collecting the temperature distribution of the entire melting channel and providing real-time feedback on the overall temperature uniformity of the barrel 3. Once the temperature measuring device 1012 detects that the temperature in different sections of the barrel 3 varies and deviates from the preset process temperature range, the various components inside the temperature regulating component 14 adjust the hot spot position. The servo motor 1403 readjusts the direction and number of rotations of the rotating shaft 1404, changes the traction stroke of the pull rope 1408, and correspondingly adjusts the extension and retraction amplitude of the spring tube 1407, the sliding distance of the push connecting frame 1410, and the forward and backward position of the front frame 1411. The deformation degree of the bidirectional compression rod 1412 changes accordingly, and the distance between the two sets of heating devices 1413 is adjusted synchronously. This either increases the local heating area to raise the temperature of the low-temperature section or shrinks the heating range to reduce the heat input of the high-temperature area, thus offsetting the temperature difference inside the barrel 3. The external insulation shell 1001 is fully wrapped around the outer wall of the barrel 3, which can significantly reduce the heat loss of the barrel 3, reduce the interference of external ambient temperature fluctuations on the melting temperature inside the barrel, reduce the temperature regulation load of the temperature regulating component 14, and further improve the overall temperature control stability.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A temperature-adjustable waste plastic melting and extrusion device (5), characterized in that, include: Support base (1), and a control device (2) is fixedly connected to the top of the support base (1); The barrel (3) is located above the support base (1), and one end of the barrel (3) is located on one side of the control device (2); The screw (6) is located inside the barrel (3); Temperature regulating component (14) is disposed inside the screw (6). The temperature regulating component (14) includes an isolation sealing plate (1401). The outer side of the isolation sealing plate (1401) is fixedly connected to the inner side of the screw (6). Two heating devices (1413) are disposed inside the screw (6). The opposite side of the heating devices (1413) is in contact with the inner side of the screw (6). Temperature detection component (10) is located on the outside of barrel (3). The temperature detection component (10) includes an external heat insulation shell (1001). The inner side of the external heat insulation shell (1001) is fixedly connected to the outside of barrel (3). Two temperature measuring devices (1012) are provided on the outside of barrel (3). The temperature measuring devices (1012) are in contact with the outside of barrel (3).

2. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 1, characterized in that, The temperature regulating component (14) further includes: The motor frame (1402) is fixedly connected to one side of the insulating sealing plate (1401) on one side. The servo motor (1403) is fixedly connected to the inner side of the motor frame (1402) on the outside. The power output shaft of the servo motor (1403) is connected to the rotating shaft (1404) through a coupling. A pull rope (1408) is wound around the outside of a rotating shaft (1404). A hole is provided on the insulating sealing plate (1401), and the outside of the pull rope (1408) is movably connected to the inside of the hole.

3. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 2, characterized in that, The temperature regulating component (14) further includes: A spring tube (1407) is fixedly connected to the side of the isolation sealing plate (1401) away from the motor frame (1402), and the pull rope (1408) is disposed inside the spring tube (1407). The top end of the sliding groove plate (1405) is fixedly connected to the inner side of the screw (6); Multiple movable parts (1406) are fixedly connected to the outer side of the spring tube (1407) on their inner sides, and the top of each movable part (1406) is slidably connected to the bottom of the sliding groove plate (1405).

4. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 3, characterized in that, The temperature regulating component (14) further includes: A straight plate (1409) is fixedly connected at one end to the side of the isolation sealing plate (1401) away from the servo motor (1403), and the straight plate (1409) is disposed inside the spring tube (1407); The inner side of the push connecting frame (1410) is slidably connected to the outer side of the straight plate (1409). The side of the push connecting frame (1410) near the isolation sealing plate (1401) is fixedly connected to one end of the pull rope (1408). The push connecting frame (1410) is located between the two heating devices (1413).

5. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 4, characterized in that, The temperature regulating component (14) further includes: The front frame (1411) is fixedly connected to the side of the push connecting frame (1410) away from the pull rope (1408); The outer side of the bidirectional compression rod (1412) is fixedly connected to the inner side of the front frame (1411), and both ends of the bidirectional compression rod (1412) are fixedly connected to the opposite side of the heating device (1413).

6. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 1, characterized in that, The temperature detection component (10) further includes: A movable motor (1002) is located on the outside of the outer insulation shell (1001). The power output shaft of the movable motor (1002) is connected to a threaded rod (1003) via a coupling. A hole is provided on the side of the outer insulation shell (1001) near the movable motor (1002). The threaded rod (1003) is movably connected inside the hole. The end of the threaded rod (1003) away from the movable motor (1002) is movably connected to the inside side of the outer insulation shell (1001). Guide rod (1004), both ends of guide rod (1004) are fixedly connected to the inside sides of the outer insulation shell (1001); The bottom ends of the U-shaped frame (1005) are movably connected to the outside of the threaded rod (1003) and the guide rod (1004).

7. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 6, characterized in that, The temperature detection component (10) further includes: Two front rods (1006), one end of each front rod (1006) is fixedly connected to the side of the U-shaped frame (1005) away from the movable motor (1002); Two fixed frames (1007) are fixedly connected to the opposite side of the front rod (1006) on the opposite side of the two fixed frames (1007). Multiple support rods (1008) are fixedly connected at both ends to the inside sides of the fixed frame (1007).

8. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 7, characterized in that, The temperature detection component (10) further includes: Multiple auxiliary rollers (1009) are movably connected to the outer side of the support rod (1008) on their inner sides. Two connectors (1010) are fixedly connected to the outside of the front rod (1006) on opposite sides. Two pressing springs (1011) are fixedly connected at opposite ends to the opposite side of the connector (1010), and the opposite side of the pressing springs (1011) is fixedly connected to the opposite side of the temperature measuring device (1012).

9. The temperature-adjustable waste plastic melting and extrusion device (5) according to claim 1, characterized in that, Also includes: The bottom end of the feed hopper (4) is fixedly connected to the top end of the barrel (3); The extrusion device (5) is fixedly connected on one side to the end of the barrel (3) away from the control device (2); Feed cover (9), the bottom of the feed cover (9) is set at the top of the feed hopper (4).

10. The temperature-adjustable waste plastic melt extrusion device (5) according to claim 9, characterized in that, Also includes: The drive motor (7) is located above the feed cover (9). The power output shaft of the drive motor (7) is connected to a rotating rod (11) via a coupling. The rotating rod (11) is located inside the feed hopper (4). Two extension pieces (12) are fixedly connected to the outer side of the rotating rod (11) on their inner sides; Two stirring blades (13) are fixedly connected to the end of the extension (12) away from the rotating rod (11); Multiple bases (8) are fixedly connected to the bottom of the barrel (3) at their top ends, and the bottom ends of the bases (8) are fixedly connected to the top of the support base (1).

Images